LAPACK
3.10.1
LAPACK: Linear Algebra PACKage

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Functions/Subroutines  
subroutine  slagts (JOB, N, A, B, C, D, IN, Y, TOL, INFO) 
SLAGTS solves the system of equations (TλI)x = y or (TλI)Tx = y,where T is a general tridiagonal matrix and λ a scalar, using the LU factorization computed by slagtf. More...  